Diaphragm wall construction case | Beijing City Sub-center Station Comprehensive Transportation Hub Project Section 04 Underground Diaphragm Wall Project

Construction data:

The wall thickness is 1.5/1.2 meters, the groove width is 6.8 meters, and the depth is 80~83.3 meters

Geology:

0-10 m collapsible loess,

10-30 m fine sand,

30-45 m sandy soil mix,

45-50 m fine sand and quartz sand,

50-83 meters of coarse sand and quartz sand

Project Overview:

Zhejiang Zhenxiang geotechnical customer, a professional foundation construction enterprise, invested 3 grab buckets and 1 double-wheel milling for construction. The underground diaphragm wall of the project adopts a sleeve milling joint, which is first grabbed to the end with a grab, and then milled by double wheel milling to mill the concrete joint. Sany grab SH950 single catch to 80 meters for about 32 hours, groove time 72~76 hours, groove bottom deviation within 10 cm, fuel consumption average 36 liters per hour. Truly grasp the accurate, grasp the province.